unintended pregnancy

基本解释

And half the women in the US will have an unintended pregnancy by age 45.
而且在美国，有半数妇女到45岁时都会有意外怀孕的经历。
If, however, you've missed a dose — or several doses — during a cycle, you might be at higher risk of unintended pregnancy during that cycle.
如果漏服了一个周期内的一片或者数片药物，那么该周期内非意愿性妊娠的风险将增加。
For example, averting unintended pregnancy and reducing unmet need for family planning are key interventions in improving maternal health and reducing perinatal death.
例如，避免意外怀孕和减少对计划生育未满足的需求是促进母亲健康和减少围产期死亡的重要干预措施。

"We found that easier access to emergency contraception did help women use the pills more quickly when it was needed, and they used it more often, but despite that increased use and faster use, it didn't reduce rates of unintended pregnancy."